Create an image with ofFbo and ofImage bigger than the screen

@GalliezB wrote:

Hello,

I try to create an image bigger than the screen :
`
ofApp.h :

ofImage ,imgSaver,imgLoader;
ofFbo fbo;
ofPixels pix;

`

`
ofApp.cpp :

	imgLoader.load("input.jpg");
	pix.allocate(3840,2560,OF_IMAGE_COLOR);
	fbo.allocate(3840,2560);

	fbo.begin();

	fbo.clear();
	for(int x=0;x<121;x++){
		for(int y=0; y<81; y++){
			imgLoader.drawSubsection(32*x,32*y,32,32,384,0,32,32);
		}
	}
	fbo.readToPixels(pix);
	ofSaveImage(pix,"output.jpg",OF_IMAGE_QUALITY_BEST);

	fbo.end();

`

But the output is only grey. I have found a lot of answer in the forum ( so here).
It work fine, but alone for the size of the window. Is it possible to save an image bigger than the window ?

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